Propeller of motor-driven canal and other boats, river barges, and the like



1 T. H. coesms ET AL 80,55

PROPELLER OF MOTOR DRIVEN CANAL AND OTHER BOATS, RIVER BARGES, AND THE LIKE Filed April 9, 1929 3 sheets sheet l //v vs/vraes 3 Sheets-Sheet 2 m vE/v Tales AND THE LIKE 9, 1929 TON - AWORMfIfi Nov. 4, 1930. T. H. coeems ET AL PROPELLER OF MOTOR DRIVEN CANAL AND OTHER BOATS, RIVER BARGES,

Filed April Nov. 4, 1930. -r. H. COGGINS E PROPELLER OF MOTOR DRIVEN CANAL AND OTHER BOATS, RIVER BARGES, AND THE LIKE Filed April 9. 1929 3 Sheets-Sheet 3' m vzw TOES -r lmms H. 6'066/N5 ,4. rqekm a TON V2.41!

Patented Nov. 4-, 1930" Hurrah- ES PRQIBELLER or MOTOR-DRIVEN ENGLAND v CANAL, Annotrnnia BOATS, RIVER BARGES, Ann 1 Application .filed. April 9,1929, Serial N0.' 353, 855, and injGreat Britain A rnio, 192s.

Motoradriven. propeller units are known for detachable application to boats; barges 'and' the like. In canals and other shallow water-ways great difii-cu-lty is experienced in foulingthe propeller.

the use of such motor driven propeller units in consequence of obstructions 1n the water Ways and of the varying depths encountered The inventionprovides a motor-driven proii peller unit for the purpose, particularly ap plicable to canal boats,in which the propellerv is arranged to be automatically lifted, or

moved, so as to clear itself of obstruction in the water-way, that is to say, given anormal dip of propeller "if any obstruction in the .water way is met which would be likely to damage'the propeller and its operative parts the invention will cause said propellerto be automatically lifted orimoved to clear itself of theobstruction, using the obstruction as the means for bringinginto operation the lifting mechanism. In this' 'way the propeller and its parts will be safe against damage;

A desirable embodiment of the invention arranges the propeller in relation to its mounting to be protected byxa bump shield which will contact the obstruction'and move upwardly lifting. the propeller and its'parts with it, to returnjto normal position after the obstruction has been passed; The-fall or return of the propelleriis by its own weight checked byresilient resistance which may be so arrangedthat normally the movable propellerand its parts will lift fairly easily and yet alwaysniaint'ain its requisite dip under normal conditions of drive. The lifting and lowering is without any disconnection of the drive of the propeller, and the movable stantially" above water-line. I p

7 Combined with the aforesaid features'is an arrangement wherebythe normal dip of the parts operative in the lifting and. aunt sub- 1 propeller on its verticallystationary but de-v tachable mounting is capable'of being hand adjusted relatively te the depthof the water and the load of the boat or barge.

- One arrangement according to the invention provides vertical tubular pillar which by detachable bracket mounting can drop ontoand'lift olf supports'on the 'end of the;

boat or barge. This tubular pillar eXcept for steering isst'ationary and has working within it a telescopic sleevewhose lower 'en'dprovides a bearin'g outside the pillar'for a short propeller shaft which is at right-angles to the pillar and. sleeve. A telescopic drive passes through the pillar and sleeve to drive the pro- 'peller shaft from a drive shaft above thepil-f lar. Slidably tted over the pillar is "a rigidly'builtframe'frrmi which, are slidably sus pended verticalcarrier rods connecting" at their lowerends with bearings of the propeller' shaft and fitted at their a upper ends with resilientspringswhich co-operate betweenthe rods and frame." The frame and sleeve and the propeiler sh'aft adjust verti-v Cally upon and within the pillar by screw acti0n,.so that the normal position of the propeller shaftca'n be lifted orlowereoh' but between the frame: and'therpropeller shaft there is a vertical-resilient engagement through the carrier rodsandv springs so that quite independent ofthe' position of the frame the prope'ller shaft canautomatically lift and lower.

The propeller "is protected by a guardwhich contacts the obstruction so that the propeller bladesare never fouled but only the guard protecting sameh 1 v 9 The accompanying drawings show a desirable embodiment of theinvention.

j Fig. 1 is a sectionalelevation of the (complete unit, part of theydrive' shaftand the steering barbeing broken away. i Fig. 2 is an enlarged side elevation of the lower portion of Fig. 1.

' Fig. 8is a rear-end viewofFig. 2; {The unit isconstructed about avertical tubular pillar "a which is rigidlybuilt with upper and lower-bracket mountings c and being represented at e for hand operation. Arranged Within this tubular pillar a is a telescoping sleeve Whose lower end projects from the pillar and provides at f a hearing for short propeller shaft g, at rightangles to the pillar and sleeve. The sleeve is supported by the tubular pillar and turns only therewith but can slide up and down e in. endent y s. wil h her inafter further explained. V

A telescopic drive passes through the pillar and sleeve to drive the propeller shaft 9 from a driveshaft h arranged above the.

pillar. The shaft it drives a bevelgear k which in turn drives a telescoping shaft 2" passing downwardly through the pillar and sleet-e and the rotation of this shaft-is coinnaunicated to the". propeller shaft 9- by the ing. Slidabl-y' suspended from this frame; Z t

are four verticaljcarrierrods mconnecting at their lower ends with two plate-like guardsm one each side-the propeller which guards rigidly connect loW doxvnat 0 with the-bearings of the propeller shaft 9, and serve as a rudder,

The rods m hang from the frame Z- by compression springs q. and by an extension spring 1' and as the sleeve fis rigidly connected. With the bearings of the propeller shaft g these springs suspend the. sleeve, bearings, propeller shaft, propeller and guards from the frame Z Which-by the screw .9 mounted in the, upper part of the pillar to be revolved and the screw box 8? carried by the frame Z is adjnstably super-ted from the pillar a so that, the, normal position of the propeller shaft can-be lifted or loweredi for varying the. dip, of the propeller to depths ofvvaterways, such -;be =ing hand controlledby operation of dle s I It Will'be therefore. clear that the normal dip. of the propeller is adjusted by thediftlre winding hanference of the. position of the frarnel upon the pillar a and that; quiteindependently of the. position of the frame the propeller are alwayslsafesaga nst-damage- The springs g and 1' are calculated in strength to almost balance the Weight of the parts arranged to. automatically lift when the guards are encountering any obstruction so, that very little fort isneeded totat commencement of the automatic lifting action.

Once the motor driven propeller unit is se in; position djusted to. he requir depth the propeller shaft Will remain in such adjusted position until an obstruction is met by the-"guards-iwhich. will icontact and ride over the obstruction lifting the propeller clear and allowing it to fall again byits own weight after the obstruction has been passed, without in. any. ay. stopping the drive of the propeller. or, interfering with any of its orking parts, audit may be.

conv-en-ientto. arrange some Sort. of light resilient devicesto check the. too qu ck. fall of the lifted parts after. clearing. themselves ofthe obstruction. 7

Having now described our. invention, What we. claim and. desire to. secure by Letters Patent 11., A motor-driven propeller unitfor boats, and the like, combining apillar at able to the end of a boat or barge, a frame ted upon said pillar, asleeve vertically slit ahleivvithiny the pillar andjresiliently suspended from tl i e frame, propeller shaft meant-ed upon thelower end ofthe sleeve and fitted \vitlrapropeller, a guard, fixedto the sleeve and mounting of. thelpropeller shaft, a

verticalshaftthrough the sleeveto drive the propeller shaft,and. means. for driving the vertical shaft, substantially as described,

' 2,, Amotor-driven propeller unitfor boats, barges and the'like comhining apillar attachable to the end of aboat or barge, afralli fi meunted upon said pillar, means forhandad-v justing the position of the frame upon the Pll'. larand securing it, a sleeve verticallyslidable within the pillar; and resiliently suspended from'the frame, apropeller shaftmounted upontlie lower. endof thesleeve, andfitted with, a. propeller, a guard :fixed'to, thesleeve and; unt ng-0 the propeller shaftraniextensibl e vertical shaft-through the; sleeve to drivethe propellershaftanrl means for driving thievertical shaft, substantially as de: SCTIQ'QCL,

8. a rshow-dri en n ope ler nit,forh ats bargesand he-l ke mum-1.1g alpillarattaclrable to the end ofaboat or. barge a frame amented-11 120 1; .in l ar, sleevevertieal y s idab ewtthin he pain, a p opeller shaft mount d naph ha nn r end Qfthle. leeve and fitted wit- .nlvne' lee a lard. (l a h.

i oi ties f th P wler-shaft and resilien ly suspended. from iheir me, a erti alshaft hr u h; he l ee tirwhe. 'prerel hatt, and. me f. i f germane-1 shaf ubstant ally asdeserib barges and the like, combining a pillar attachable tothe end of a boat or barge, a

frame adjustably mounted upon said pillar, a

' sleeve vertically slidable Within the pillar, a

propeller shaft mounted upon the lower end I of the sleeve and fitted with a. propeller, a guard comprising two guard plates fixed to the mounting of the propeller shaft and re--.

siliently suspended by springs from the frame, a vertical shaft through the sleeve to drive the propeller'shaft, means for driving said vertical shaft, and means forswinging the pillar upon its mounting to the boat or barge, substantially as described.

- 5. A motor-driven propeller unitfor boats,

barges and the like combining a pillar attachable to the end of a boat, or barge, 'a frame rigidly mounted upon said pillar, asleeve vertically slidable up and down within the pillar by a straightdine motion, a propeller shaft mounted upon the lower end of the sleeve and fitted with a propeller, a guard '7 fixed to the sleeve and mounting of the propeller shaft support-said sleeve and propeller from said and suspended from the frame to frame, a telescopiovertical shaftthrough the sleeve to drive the propeller shaft, and means "for driving said telescopic shaft, substantiallylas described. I r In test mony whereof we have afiixed our signatures.

THOMASHERBERT COGGYINSL,

AL BER'I FARRINGTON. j 

